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https://topologicalmusings.wordpress.com
Topological MusingsMon, 27 Apr 2015 16:24:05 +0000hourly1http://wordpress.com/Comment on My All Time Favorite Guitarists (1) by ask
https://topologicalmusings.wordpress.com/2008/03/10/my-all-time-favorite-guitarists-1/#comment-2271
Mon, 27 Apr 2015 16:24:05 +0000http://topologicalmusings.wordpress.com/?p=68#comment-2271It’s very effortless to find out any topic on web as compared
to textbooks, as I found this piece of writing at this site.
]]>Comment on Section 2 – The Axiom of Specification by Walter Milner
https://topologicalmusings.wordpress.com/2007/12/15/section-2-the-axiom-of-specification/#comment-2267
Fri, 10 Apr 2015 14:07:14 +0000http://topologicalmusings.wordpress.com/2007/12/15/section-2-the-axiom-of-specification/#comment-2267Its not clear to me why this stops Russell’s Paradox. RP starts Let S be the set of all sets which…
How about ‘A’ is the set of all sets. and the ‘condition S(x)’ is that x is not an element of itself.
Why does the axiom of specification disallow that?
Ratherthan saying theer ixists a set such that.. shoudl it not say that all sets must be specified this way. ie
for all sets S there exists a universal set U and a predicate P such that for all elements of S they are elements of U and P(the element) is true?
Key difference is for all sets, not there exists a set
]]>Comment on ZFC and ETCS: Elementary Theory of the Category of Sets by Leone Partlow
https://topologicalmusings.wordpress.com/2008/09/01/zfc-and-etcs-elementary-theory-of-the-category-of-sets/#comment-2259
Tue, 31 Mar 2015 01:04:30 +0000http://topologicalmusings.wordpress.com/?p=446#comment-2259Top site, a bientot sur la toile
]]>Comment on Pedagogy: Concrete and Abstract examples in Mathematics by Violette
https://topologicalmusings.wordpress.com/2008/07/29/pedagogy-concrete-and-abstract-examples-in-mathematics/#comment-2055
Tue, 14 Oct 2014 15:32:20 +0000http://topologicalmusings.wordpress.com/?p=312#comment-2055It was hard to find your blog in google. You should
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]]>Comment on Solution to POW-13: Highly coincidental! by David Speyer
https://topologicalmusings.wordpress.com/2009/07/22/solution-to-pow-13-highly-coincidental/#comment-1924
Fri, 18 Jul 2014 15:11:18 +0000http://topologicalmusings.wordpress.com/?p=1049#comment-1924You might want to look at Green and Tao: On sets defining few ordinary lines http://arxiv.org/abs/1208.4714 . Here is a weak statement of their result: Fix a constant c>0. Consider arrangements of n points in the plane such that, out of the lines they define, all but cn pass through another point. Then all but d of the points lie on a cubic (where d depends on c), and are arranged in the manner of your x_i, y_j and z_k.
]]>Comment on Inclusion-Exclusion Principle: Counting all the objects outside the oval regions! by nick
https://topologicalmusings.wordpress.com/2008/03/18/inclusion-exclusion-principle-counting-all-the-objects-outside-the-oval-regions/#comment-1719
Mon, 10 Feb 2014 12:04:59 +0000http://topologicalmusings.wordpress.com/?p=69#comment-1719I wonder to what operation this corresponds to in the category of Set
]]>Comment on Solution to POW-9: Period of a decimal expansion by Adam
https://topologicalmusings.wordpress.com/2008/08/30/solution-to-pow-9-period-of-a-decimal-expansion/#comment-1698
Sun, 27 Oct 2013 15:56:53 +0000http://topologicalmusings.wordpress.com/?p=460#comment-1698sorry, my mistake in second statement 65537 is a prime , 655376 = 2^4*40961.
First statment seems to be good
]]>Comment on Solution to POW-9: Period of a decimal expansion by Adam
https://topologicalmusings.wordpress.com/2008/08/30/solution-to-pow-9-period-of-a-decimal-expansion/#comment-1697
Sun, 27 Oct 2013 09:13:28 +0000http://topologicalmusings.wordpress.com/?p=460#comment-1697it seems that decimal expansion is strictly periodic ( preperiod =0) not eventually periodic. 2^4*40961 = 65537 so its expansion is periodic because it’s prime factorisation has 2 and also other primes then 2 or 5 .
]]>Comment on Solution to POW-9: Period of a decimal expansion by Adam
https://topologicalmusings.wordpress.com/2008/08/30/solution-to-pow-9-period-of-a-decimal-expansion/#comment-1696
Sun, 27 Oct 2013 08:56:10 +0000http://topologicalmusings.wordpress.com/?p=460#comment-1696Here one can check solutions using online calculator : http://www.knowledgedoor.com/2/calculators/convert_a_ratio_of_integers.html
]]>Comment on Integration Bee, Challenging Integrals by Satyajit Nandy
https://topologicalmusings.wordpress.com/2008/01/23/integration-bee-challenging-integrals/#comment-1695
Thu, 24 Oct 2013 06:50:32 +0000http://topologicalmusings.wordpress.com/2008/01/23/integration-bee-challenging-integrals/#comment-1695plz leave the solution… my result is different….
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